Press



F. C. EMRICK PRESS e Shets-Shee-t 1 Filed Oct. 21, 1922 F. C. EMRICKPRESS Filed dot. 21,

1922 6 Sheets-Sheet 2 Fran/1 C fmm'c/r attowkq F. C. EMRICK PRESS FiledOct/21 19 2 6 Sheets-Sheet 8 Dec. 2, 1924- 1,517,282

F. C. EMRICK PRESS Filed Oct. 21 1922 6 Sheets-Sheet 4 PRESS 6Sheets-Sheet 5 Filed Oct. 21 19 2 F. c. EMRICK PRESS Filed Oct. 21; 19226 Sheets-Sheet 6 Patents ec. 2, i924.

FRANK C. EMB-ICK,0'F KAZAMAZGO, MICHIGAN, ASSIGNOB T0 KALAMAZOO SANITARYMANUFACTURING COMPANY,

or KALAMAZOO, MICHIGAN.

PRESS.

Appflica-tion filed October 21, 1922. Serial No. 595,961.

To (/15 who 1w it may concern:

Be it known that I, FnAN-n: C. EMI-uon, citizen of the United States,residing in city and county of Kalamazoo, State of Michigan, haveinvented certain new and. useful Improvements in Presses, of which thefollowing is a specification.

This invention relates to improvements in presses.

My improved press-is especial-ly designed by: me tor a molding press andI have illustrated and described the same in this application as I haveembodied for that purpose. Various features of my improvements are,however, adapted for use in other relations.

The main objects of this invention are;

v First, to provide an improved press which is automatic in itsoperation. a

Second, toprovide an improved press for molding comparatively largeobjects, such as saggars, which is adapted to receive the clay in slugs,the molded articles being automatically discharged.

Third, to provide an improved automatic press machine which is of largecapacity.

Fourth, to provide an improved automatic press in which the parts are socon structed and arranged as to be very durable.

Further objects, and objects pertaining to details and economies ofconstruction and operation will definitely appear from the detaileddescription to follow.

I accomplish the objects oft my invention by "the devices and meansdescribed in the following specification. The invention is clearlydefined and pointed out in the claims.

A structure whic-his a preferred embodiment oi my invention is clearlyillustrated in the accompanying drawing forming a part of thisapplication, in which:

Fig. I is a perspective view of my improved press, the plunger beingshown in its actuated position.

Fig. II is a perspective view from the discharge side of the machine,the molds or forms being omitted.

Fig. III is adetail horizontal section on a line corresponding to line3-3 of Fig. II. the forms being shown in position and a fragment of thedischarge conveyor being shown in its relation to the machine.

I Fig IV is enlarged detail section on a line corresponding to line $43:of Fig. V showing details of the mold and means for locking it in closedposition during the molding operation.

Fig. V is a detail plan view of the locking I or clamping mechanism,partly in section on a line corresponding to 'line 55"of Fig. I.

Fig. VI is afragmentary view showing parts of the molding turret ortable actuating means. Fig. VII is a fragmentary plan view of parts oithemecha-nism shown in Fig. VI.

F VIII is a detail section on a line cor-responding with line 88 of Fig.VI.

Fig. VIII is a detail section on a line corresponding to line 8 8 ofFigVI showing further details of the turret actuating mechanism.

Fig. IX is an enlarged detail section on a line corresponding to line 99 of Figs. I, X, and XI showing details of the hydraulic plungercontrol.

F X is a detail section on a line corresponding to line 1010 or Fig. IXshowing further details of the hydraulic plunger control means.

Fig. XI is a detail view partly in section on a line corresponding toline 11-11 of Figs. X and XI Fig. XII. is a detail section on a linecorresponding :to line 12-12 of Fig. XI.

' Fig. XIII, a fragmentary side elevation showing details of the controlvalve operating means.

Fig. XIV is adetail side elevation of parts of the automatic plungerrelease mechanism.

Fig. XIV is a detail view showing further details of the automaticrelease mechanism.

Fig. XV is a fragmentary elevation of parts of the turret controlmechanism.

Fig..X.VI is a detail view partly in section on a line corresponding toline 1616 of Fig. XVII showing details of the mold charging mechanism.

Fig. XVIII is a detail view' of the dis Fig. XVIII-is a perspective Viewof one of the articles which the machine illustrated I is especiallydesigned to mold.

' parts. 7

, ed on suitable bearings carried by the up- In the drawing thesectional views are taken, looking in the direction of the little arrowsat the ends of the section lines and similar reference numerals refer tosimilar parts throughout the several views. Referring to the drawing, Iprovide a base 1,'which in practice is a casting of suit able size toeffectively'su pport the operating The turret or table 2 is mountright3. The details of these hearings are, however, not illustrated as theyform no part of this invention.

provided with an arm 9 pivoted at 10 to the bracket '11. This outersection isalso provided with a handle 12 for opening andclosing thesame. The table or turret is moved with a step by step movement to bringit into operative relation to the molding plunger and to advance itafter molding to discharging position, also, while at rest, the operatormay close the mold and place the clay in the molds as they successivelycome to charging position.

The feed mechanism for the table comprises a plunger 13 mounted belowthe table. This plunger is provided with a head '14 (see Fig. VI). Thishead carries a pin 15 which is projected by the spring 16 intoengagement with the rollers. 17 supported in radial ways 18 on the underside of the table. A cylinder 19 is provided so that the plunger isactuated by fluid underpressure. The rollers" travel in the radial ways18 so that when the plunger is actuated the tableis advanced one step.

The pin 15 is engaged successively with the rollers. and there beingfour as shown in Fig. III, each stroke of the plunger operates the tablea quarter turn.

The pin 15is locked in its engaged and disengaged positions by catches15 pivoted on the plunger head and held yieldingly in engaging positionby the springs 15". Only one of these is shown in detail as in Fig. VIIIthe other being a duplicate of 1t, although disposed inreversedposition. Both are indicated by dotted lines in Fig. VI. The pin has anotch 15 adapted to I receive these catches, one of the catches beinghigher than the other holds the pin in its pro ected p os1t1on and theother in its retracted position, Trips 16 are provided for releasingthese catches at the end of the stroke of the plunger, the releasingbeing timed so that the pin may be retracted or withdrawn from therollers.

The driving pin 15 is automatically retracted at the end of each workstroke, the head 20 of the pin being engaged by the U- shaped trip 21.This trip 21 is mounted for vertical movement, it being provided with aplunger operating in a cylinder 22. The plunger is forced to itsretracted or pin releasing position by means of the fluid under pressureand is held in that position by the dog 24: pivoted at 25 to the bracket26, the trip being projected to the position illustrated in dottedlines, which is the driving pin disengaging position, by means of thecoiled spring 27 shown conventionall x in Fig. VI.

The admission of the actuating fluid to the cylinder 19 is controlled bythe valve 23, the details of which are not illustrated. The valve 28 isconnected to the cylinder 19 by means of the pipe 29. The valve 28 iscontrolled from the trip plunger which is provided with an arm 30 havinga roller 31 which engages an arm 32 on the stem of the valve 28. Thisarm 32 has an inclined groove 33 with which the roller 31 on the arm 30coacts so that as the trip plunger reciprocates vertically the stem ofthe valve 28 is given a rotary motion (see Figs. VI, VII and VIII). Thegroove 33 of the arm 32 is provided with a side wall 35 pivoted at 36and held in closed position by the cam shaped locking disk 37 having aflattened side 88. This disk is held normally in engaging position bymeans of the coiled spring 39 connected to the pin 40 on the lockingdisk and to a pin 41 on the arm 32. This locking disk is released andthe valve returned to neutral by the tappet arm 42 carried by the head14- of the table actuating plunger 13.

This tappet arm is adapted to release the locking disk and engage theroller 44- on the arm 32, the tappet arm having a cam portion 45 adaptedto engage the roller 44 (see dotted lines in Fig. VII), the roller beingengaged after the locking disk has been released, thereby permitting theswinging of the valve to neutral and the return movement of the tripplunger.

.The dog 2a is connected to the bell crank lever 47 pivoted at 48 andconnected by the link 49 to a bell crank lever 50 pivoted at 51. Thisbell crank lever 50 is in turn connected by the link 52 to the lever 53(see Figs. VI and XV), the lever 53 being operated by the rod 54connected to the main molding plunger 55 for synchronizing themechanism.

The rod 54 is provided with a pivoted dog 56 for actuating the roller 57on the lever 53, passing up one Side of the dog on loo names the downstroke of the rod, or passing over the dog as shown by full lines inFig. XV U11 the down strolce of the rod the dog drops out by gravityafter the lever has passed it so that onthe up stroke of the rod theroller must travel on the other side of the dog. thereby actuating thelever as shown in E Ig.XE

The valve 28, as stated, controls the connection 29 leading to thecylinder 19. The intake or pressure connection 58 is connect ed to thepower or pressure line indicated at :39, this connectionv however; notbeing illustrated. The pipe29 connects the valve to the return end ofthe cylinder- 19.

i0 is an eXliai-is-t connection for the valve 28. The connection 61 forthe trip cylinder 22 will be described later as .it is controlled fromthe manually operated valve for con trolling the ejector.

vThe ram or molding plunger is provided with a cylinder 62 mounted onthe frame headpiece 5. An exhaust or overflow tank is mounted above thehydraulic cylinder 62, it being connected to the cylinder by the pipe6%. Mounted upon the cylinder 62 is the cylinder 65 in which there is aplunger 66 having a cross head 67 at its upper end to which the rods 54:are connected. The rods are arranged through the headpiece 5 oi theframe and secured to the head of the ram, thus providing a return meansfor the rain. Thisreturn cylinder is controlled by a valve designatedgenerally bv the numeral 69, the details of which are nbt illustrated.This valve is controlled by th cam-shaped tappets 70 on the table 2which engage the lever '71 pivoted on the frame 72 and connected by therod 73 to the valve.

This valve 69 controls the admission of the actuating fluid to the maincylinder 62 and also to the return cylinder 65, the connection 7 1leading to the upper end of the cylinder 105 and through the connection1.06 to the main cylinder 62. The valve is'con nccted by the pipe 75 tothe lower end of the return cylinder 65 and is connected to the powersupply bythe pipe 76. This pipe 76 is provided with a shut-off valve 77for use when it is desired to cut off the operation of the machine.

Thevalve 69 is automatically operated to cut off the supply of fluid tothe main cylinder and deliver to thereturn cylinder by means of apressure actuated device which for convenience I designate as anunloader. This comprises a cylinder 78 having inlet connection? 9 to thepipe 7d and through the connection described to the cylinder 62. Theplunger 80 of this device has a pressure sprin 81, the upper end of thespring being supported by a yoke 82 adjustable upon the rod 83. Theplunger acts upon the spring .through the toggle designated the tensionof the spring and actuate the toggle, a lug 85 on the toggle head 82engages a tappet 86 on a sleeve 8? mounted on the rod 87. This sleeve,is connected to the arm 88 ot' the \ttlVti 69 so that when the pressurein the cylinder reaches a predetermined point, that is, a point thatwill overcome the tension of the spring 81 the unloader device operatesto actuate the valve 69 opening the main cylinder to the exhaust and thereturn cylinder to power, thereby retracting the plunger.

To provide for rapid initial movement of the ram I connect the same tothe reservoir 63 through the passage 89 which is controlled by the valve90 (see Figs. IX, X and XI), the operation being to admit the rapidpassage of the power fluid through the passage 89 until the final highpressure point is reached when this passage is cut off by the closingoat the valve 90 and the power for the remaining movement is suppliedthrough the valve69 described. The valve 90 is provided with racks 91actuated by the coacting rack 92 movable transversely thereof, this rack'92 being actuated by the plunger 93 within the cylinder 9%. v Thiscylinder 94L is connected by the pipes 95 and '96 to the valve 97 whichis operated from the rod 54:, the valve having an arm 98 ant th rodhaving an arm 99 secured thereto to coactwith the valvearin 98 as shownin Fig. XIII.

Owing to the high pressure to which the mold is subjected when the rainis actuated it is necessary to lock the mold to the table and also tolook the mold sections together. To accomplish the latter, I provide apair of reciprocating channelsiaped locking members 100 having a seriesoil? balls 101at each. side to coaot with the mold flanges 102 (seeFigs. II, XVI, and XVII). The

grooves or channels of the locking memhers 100 are slightly taperedandthe flanges 102 are correspondingly tapered so that they are lockedvery firmly together and exuding oil? claybetween the joints of thesections is prevented. V

The locking members 100 are connected by the yoke 103 and are operatedby means of the plunger 10 icoacting with the cylinder 105. The fluidconnections for this cylinder have been described.

The molds. are clamped to the table at the molding point by clampingmeans com prising a pair oi jaws 107 supported upon a cross piece 108which has a limited sliding movement between the bars 108 supported bythe yoke-like frame piece 111 mounted on the uprights 4. These areactuated by the plunger 1 10 the plunger being prosided with a rodextension 110 on which the cross piece 108 is mounted. The outer ends ofthe jaws 107 are connected by the links 113 to the plunger, the linksbeing pivoted to the plunger at 1 14; so that, as the 'plunger is forcedinwardly, the jaws are actuated to clamp the mold to the bed and on thereverse movement they are opened up. Y

A coiled spring 115 is arranged between the plunger and the-cross piece108 to return the plunger. Coiled springs 115 are arranged between thecross piece 108 and the'cr-oss piece 108. These serve to throw thiecrosspiece 108" forward when the forward movement of the plunger compressesthe spring 115 sufiiciently to overcome the tension, that is, the spring115 is of such tension as to move the cross piece 108 rearwvardlyagainst the tension of the springs 115. However, when the plunger movesii'orward under the. actuating fluid the springs 115 are of sufficientstrength to move the jaws forwardto clamping position. This movement isrequired owing to the shape of the molds.

The outer section 8 of the mold is, in the embodiment illustrated, swungopen by hand;- the innersection is then pushed forward to discharge themolded article to the conveyor 117 or other suitable receiving table.This discharge is also a fluid operated device and consists'of thepusher 118 prowith a snap-like action. This valve is connected to thepower line by the conduit 130.

This valve "also controls the trip plun er cylinder 22, the pipe 61leading to t is valve.

Assuming that the machine is in operation andthe moldsall closed asshown in Fig. III, the operator grasping the handle 12 swings the outersection of the mold to the position shown by'dotted lines, and thengrasping the lever 127 opens the valve 124 which controls the ejectorplunger 122 in V the cylinder 123. This valve also controls,

the retracting trip 21 for the driving pin 15, the valve being suitablyconnected to the cylinder 22 for the trip plunger. The opening of themold and the operation of the lever 127 are the only manual operations,the remainder being entirely automatic, the mechanisms being timed sothat the molding plunger operates While the table is at rest and whenretracted and the table or turret operating when the plunger isactuated.

The table is actuated by the plunger 13 in the cylinder 19 which iscontrolled by the valve 28. The details of this valve are notillustrated but the valve 28 is connected. to the cylinder 19 by meansof the pipe 29.

The valve 28 is automatically controlled by the trip plunger 21 whichhas an arm engaging the arm 32 on the stem of the valve 28. The ram ormolding plunger has a cylinder 62 and to this is connected an exhaust orstorage tank 63. The return cylinder 65 is provided with a plunger 66.This return cylinder is controlled by the valve designated generally bythe numeral 69 which is controlled by tappets 70 on the table, thustiming the movements of the parts. This valve 69 also controls theadmission of the actuating fluid to the molding cylinder.

The cut-off valve 77 is provided when it is desired to stop the machine.When the molds are in molding position they are automatically clamped tothe table and locked together by means actuated by the plunger 10% andcylinder 105. These cylinders are connected to the main or moldingplunger so that they are actuated simultaneously with the moldingplunger.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a molding machine, the combination of a molding table, moldscomprising complementary mold members having bottom flanges and upwardlytapered flanges at their abutting edges, said molds being disposed onsaid table which constitutes the bottom of the molds, a molding plunger,a cylinder therefor, mold locking members channeled to embrace saidflanges and having opposed upwardly inclined ways in the sidesof thechannels with balls therein coacting with said mold member flanges,actuating means for said mold locking members, means for clamping-themold to the table at molding position comprising a pair of coactingclamping jaws, one of which is adapted to engage the table and the otherthe bottom flange of a mold, actuating means for said jaws comprising aplunger operatively connected to the jaws and a coacting cylinder, andfluid control connections for said cylinders whereby their actuation istimed.

2. In a molding machine, the combination of a molding table, moldscomprising complementary mold members having upwardly tapered flanges attheir abutting edges, said molds being disposed on said table whichconstitutes the bottom of the molds, a molding plunger, a cylindertherefor, mold locking members channeled to embrace said ,fl'anges,actuating means. for said mold flanges and having opposed upwardlyinclined ways in the sides of the channels with balls therein .coactingwith. said mold member flanges, actuating means for said mold lookingmembers, and fluid control connections for said cylinders whereby theiractuating. is timed.

3. In a molding machine, the combina tion of a molding table, moldscomprising complementary mold members having bot tom flz'a nges at theirabutting. edges, said molds" being disposed onsaid table whichconstitutes the bottom of the molds, a mold plunger, a cylindertherefor, ZIlOldlOCk-f ing members channeled to embrace said lockingmembers, means for clamping the mold to the table at the moldingposition comprising a pair of coacting clamping jaws, one of which isadapted to engage the table and the" other the bottom flange of a mold,actuating means for said jaws comprising at plunger operativelyconnected to the jaws and a coasting cylinder, and fluid controlconnections for said cylinders whereby their actuation is timed.

4; In a moldingmechine, the combination of molding table, moldscomprising complementary mold members having flanges at their abutting:edges, said molds being disposed on said table which constitutes thebottom of the molds, a molding plunger, a cylinder therefor, moldlocking members channeled to embrace. said flanges, actuating means forsaid mold locking members,

and fluid control connections for said eylin ders whereby theiractuating is timed.

5. In a molding machine, the combination of a molding table, molds.comprisin complementary mold members having anges at their abuttingedges, said molds being disposed on said table which constitutes thebottom of the molds, a molding plunger, a cylinder therefor, moldlocking members channeled to embrace said flanges, a connecting yoke forsaid mold locking members, actuating means for said mold. lock-' ingmembers comprising cylinders and coacting plungers'connected to saidyoke, and

fluid control connections for said cylinders members, means forclamping. the mold to the-table at molding position comprising. a pairof coactingv clamping jaws, one of which is adapted to engage the tableand the other the bottom flange oiamold, and actuating means for saidjaws.

to embrace said flanges, actuating means for said mold locking members.

8. lin a molding. machine, the combination of a molding. table,moldsdisposed on said table and comprising. complementary mold membershaving bottomflanges and flanges at their abutting edges, a moldingplunger,

actuating means therefor, mold locking members channeledto embrace saidflanges, andhaving opposed ways in the sides of the channels with ballstherein coacting with said mold member flanges, actuating means for saidmold locking members;

9: In a molding machine, the combination of molding table, moldsdisposed on said table and comprising complementary mold members havingbottom flanges, a molding.

plunger, actuating. means therefor, mold locking members, actuatingmeans for said mold locking members, means for clamping themold to thetable at molding position, comprising a pair of coacting clamping.

jaws, one of which is adapted to engage thetable and the otherthe bottomflange of amold, and actuating means for said jaws.

1 0. In a molding machine, the combination of a molding table, moldsdisposed onsaid table and'conrprising complementary mold members, amolding plunger, actuat ing means therefor, mold locking members,actuating means for said mold locking members. means for clamping themold to the table at molding position.

11. In a molding machine, the combinationjof a molding table, moldsdisposed on said table having bottom flanges, a molding plunger,actuating means therefor, means for clamping the mold to the table atmolding position, comprising a pair 0t coacting clamping jaws, one ofwhich is adaptedto engage the table and the other the bottom flangeofamold, and actuating means for said aws.

12. In a molding machine, the combina tion of a molding table, moldsdisposed on :said table and comprising complementary mold members havingflan-gesat their abut ting edges, moldmg plunger-,actuatmg meansthere-for, mold locking members coacting with said flanges, actuatingmeans for said mold locking members, and means for controlling saidplunger and locking member actuating means whereby their actuation istimed.

13. In: a molding machine, the combination with" a moldingtable,,0fmolds comprising complementary sections having bottom flangesand flanges at their abutting edges, said molds resting onthe tablewlnch constitutes the-bottom'of the molds, a molding plunger, 21coacting cylinder, mold locking members'channele'd to'engage saidflanges to clamp the mold members together, actuating means for saidmold lock members comprising plungers and coacting cylinders, means forclamping the molds to the table at molding position comprising asupporting frame, coacting clamping jaws, one of which isadapted toengage the table and the other the bottom fiangeof a mold, a supportingmember on which said jaws are pivotally mounted disposed on said framefor limited movement thereon, actuating means for said jaws comprising aplunger and a coacting eylinder,links connecting the outer ends of saidjaws to'said plunger, a return spring for said plunger, and a springarranged to .act on said jaw supporting member whereby when'theplunger'isactuated to an extent counterbalancing the said return springsaid second spring moves said supporting member to clamp ng position.

' ed to engage the table and the other the bottom'fiange of a mold, asupporting member on which said jaws are pivotally mounted disposed onsaid frame for limited movementthereon, actuating means for said awscomprising aplunger and a coacting cylinder, links connecting the outerends of said jawsto said, plunger, a return spring for said plunger, anda spring arranged to act on said jaw supporting member whereby when theplunger is actuated to an extent counter-balancing the saidreturn springsaid second spring moves said supportlng member 00- clamping position.

15. In a molding machine, the combination witha molding table, of moldscomprising'complementary sections, a molding plunger," a coactingcylinder, mold locking members adaptedto clamp the mold members togetherin molding position, coacting pivoted clamping-jaws, one of which isadapted to engage the table and the other the mold, actuating means forsaid jaws comprising a plungerand a coacting cylinder, and linksconnecting the outer ends of said jaws to said plunger.

16. :In a molding machine, the combina- 7 tion with a molding table, ofmolds, a molding plunger, a coacting cylinder, coacting pivoted clampingjaws, one of which is adapted to engage the table and the other themold, actuating means for said jaws comprising a plunger and acoacting'cylinder, and links connecting the outer ends of said jaws tosaid plunger.

' 17. In a molding machine, the combination with a molding table, ofmolds adapted to be disposed on said table, a molding plunger, actuatingmeans therefor, means for clamping the molds to the table at moldingposition, comprising a supporting frame, coacting clamping members, asupporting member on which said clamping members are mounted disposed onsaid frame for limited movement thereon, actuating means for saidclamping. members comprising a plunger and a coacting cylinder, a returnsprin for said plunger, and a spring arrange to act on said supportingmember whereby when the plunger is actuated to an extentcounter-balancing the said return spring said second spring moves saidsupporting memher to clamping position.

18. In a molding machine, the combination with a molding table, of moldsadapted to be disposed on said table, a molding plunger, actuating meanstherefor, means for clamping the molds to the table at molding position,comprising a supporting frame, 00- acting clamping members, andactuating means for said clamping members comprising a plunger and acoacting cylinder.

19. In a molding machine, the combination with a molding table, of moldsdisposed on said table so that the table constitutes the bottoms of themolds, a molding plunger, actuating means therefor, and means forclamping the molds to the table at molding position.

20. In a molding machine, the combination with a rotating work table, aplurality of molds comprising complementary members mounted upon saidtable, the table constituting the bottom of the mold, the outer moldmember being provided with an arm at one side pivoted on said table sothat such outer mold member may be swung to one side to clear the innermember, a radially reciprocating ejector member mounted centrally ofsaid table to successively coact with the inner mold members to e ectthe molded artlcles from the table, means for actuating said e ectormember comprising a plunger and coacting cylinder,

a pair of racks, pinions on said plunger member coacting with said rackswhereby the plunger member is guided, and a valve for controlling saidcylinder.

21. In a molding machine, the combination with a rotating work table, aplurality of molds comprising complementary members mounted upon saidtable, the table constituting the bottom of the mold, the outer moldmember being provided with an arm at one side pivoted on said table sothat such outer mold member may be swung to one side to clear the innermember, a radially reciprocating ejector member mountnarrate fconstituting the bottom oi the mold, the" outer mold member beingprovided with an arm at one side pivoted on said table so that suchouter mold member may be swung to one side to clear the inner member, a

radially reciprocating ejector member mounted centrally of said table tosuccessively co'act with the inner mold members to eject the moldedarticles from the table, means for actuating said ejector member, a pairof racks, pinions on said plunger member coacting with said rackswhereby the plunger member is guided, and a valve for controlling saidcylinder.

23. In a molding machine, the combination with a rotating work table, aplurality of molds comprising complementary members, the outer moldmember being mounted on said table so that it may be adjusted to clearthe inner member, an ejector member adapted to successively coact withthe inner mold members to eject the molded articles fromthe table, meansfor actuating said ejector member, comprising a plunger and coactingcylinder, a pair of racks,

pinions on said plunger member coacting with said racks whereby theplunger memher is guided, and a valve for controlling said cylinder.

24(- In a molding machine, the combination with a rotating work table, aplurality of molds comprising complementary members, the outer 'moldmember being mounted on said table so that it may be adjusted to clearthe inner member, an ejector member adapted to successively coact withthe inner mold members to eject the molded articles from the table,means for actuating said ejector member comprising a plunger andcoacting cylinder, and a valve for controlling said cylinder.

25. In a molding machine, the combination with a rotating work table, aplurality of molds comprising complementary members, the outer mold.member being mounted on said table so-that it may be adjusted to clearthe inner member, an ejector member adapted to successively coact withthe inner mold members to eject the molded articles from the table,means for actuating said ejector member, a pair of racks, pinions onsaid plunger member coacting with said racks whereby the plunger memberis guided, and a valve for controlling said cylinder.

26. The combination with a rotatable table, a work. plung ger, a coacylinder, a return plunger for said work plunger, a coactingcylinder forsaid return plunger, means for actuating said table comprising! aplunger and coacting cylinder, vays disposed radially on said table,rollers traveling on said ways, said tab e actuating plunger beingprovided with a reciprocating pin adapted to engage said rollers, aspring for projecting s 'd Jin, catches for locking said pin in. r actedand projected position, means tor releasing said catches at the ends orthe stroke of the plunger, a pin releasing means comprising a plungerand coacting cylinder, said pin. releasing plunger being adapted toengage said pin at the end or the work stroke of the table actuatingplunger, a return spring for said pin releasing plunger, dog for holdingsaid pin releasing plunger in its pin releasing position, a valve forcontrolling said. table actuating plunger, a tappet on said tableactuating plunger for actuating said valve, and means for releasing saiddog operatively connected with said return plunger.

27. The combination with a rotatable work table, a work plunger, acoacting cylinder, a return plunger for said work plunger, a coactingcylinder for said return plunger, means for actuating said tablecomprising a plunger and coacting cylinder, ways disposed radially onsaid table, rollers travel.- ing in said ways, said table actuatingplunger being provided with a reciprocating pin adapted to engage saidrollers, a pin releasing means comprising a plunger and a coactingcylinder, said pin releasing plunger being adapted to engage said pin atthe end of the work stroke of the table actuating plunger, a dog torholding said pin releasing plunger in its pin releasing position, avalve for controlling said table actuating plunger, a tappet on saidtable actuating plunger for actuating said valve, and means forreleasing said dog operatively connected with said return plunger.

28. The combination with a rotatable table, a work plunger, means foractuating said work plunger, means for actuating said table comprising aplunger and coacting cylinder, ways disposed. radially on said table, aroller traveling in each said ways, said table actuating plunger beingprovided with a reciprocating pin adapted to successively engage saidrollers, a spring for projecting said pin, catches for locking said pinin its retracted and projected positions, means for releasing saidcatches atthe ends of the stroke of the plunger, a pin releasing meanscomprising a plunger and a coacting cylinder, said pin releasing plungerbeing adapted to engage said pin at the end of the work stroke of saidtable actuating closing said valve,

plunger, a return spring for said pin releasing plunger, a dog forholding said pin releasing plungerin its pin releasing position, a valvefor controlling said table actuating plunger, and a tappet on said tableactuating plunger for closing said valve.

29. The combination with a rotatable table, a work plunger, means foractuating said work plunger, means for actuating said table comprising aplunger and coacting cylinder, ways disposed radially on said table, aroller traveling in ea'ch said ways, said table actuating plunger beingprovided with a reciprocating pin adapted to successively engage saidrollers, a pin releasing means comprising a plunger and a coactingcylinder, said pin releasing plunger being adapted to engage said pin atthe end of the Work stroke of said table actuating plunger, a dog forholding said pin releasing plunger in its pin releasing position, avalve for controlling said table actuating plunger, and a tappet on.said table actuating plunger for 30. The. combination with a rotatabletable, a work plunger, means for actuating said work plunger, means foractuating said table comprising a plunger and coacting cylinder, waysdisposed radially of said table, a roller mounted in each way, means forsuccessivelyengaging said plunger With I said rollers, and an automaticcontrol therefor.

81. The combination of awork plunger, a cylinder therefor, a returnplunger for said work plunger, a cylinder therefor, a fluid tank, avalved connection therefor to said work plunger. cylinder, a plunger foractuating said valve, a control valve for said work and returncylinders, pressure actuated means for controlling said valve comprisinga cylinder connected to said work plunger cylinder, a plunger therefor,a governing spring, and toggle means coactmg with said spring forcontrolling the movement of said plunger.

82. The combination of a work plunger, a cylinder therefor, a returnplunger for said work plunger, a cylinder therefor, a control valve forsaid work and return cylinders, pressure actuated means for controllingsaid valve comprising a cylinder connected to said work cylinder, aplunger therefor, a governing spring, and toggle means coacting withsaid spring for controlling the movement of said plunger.

33. The combination of a work plunger, a cylinder therefor, a returnplunger for said work plunger, a cylinder therefor, a fluid exhausttank, a valved connection therefor to said Work cylinder, a plunger foractuating said valve, a control valve for said Work and returncylinders, and pressure actuated means for controlling said valve.

34. The combination of a work plunger, a cylinder therefor, 21 returnplunger for said Work plunger, a cylinder therefor, a crosshead on saidreturn plunger, rods connecting said crosshead to said work plunger, anda control valve for said Work and return cylinders.

85. In a molding machine, the combination of a rotatable table, meansfor actuating said table with a step by step move ment comprising acylinder and coacting plunger, molds disposed on said table whichconstitutes a bottom therefor, said molds comprising complementary moldmembers, the outer of which is pivotally mounted upon the table, theinner mold members being slidable upon the table, said mold membershaving abuttingflanges at their meeting edges, a molding plunger, acoacting cylinder, means for returning said molding plunger comprising aplunger and cylinder, a control valve for said molding and returncylinders, a pressure actuated means for.

controlling said valve, mold locking members coacting with said flanges,actuating means for said mold locking members comprising cylinders andcoacting plungers, means for clamping the mold to the table at moldingposition, actuating means for said clamping means comprising a cylinderand coacting plunger, an ejecting means comprising a cylinder and aplunger adapted to engage the inner mold members as they aresuccessively brought to discharging position, and fluid delivery andcontrol members for the several cylinders whereby the actuation of theparts is timed.

'36. In a molding machine, the combination of a rotatable table, meansfor actuating said table with a step by step movement, comprising acylinder and coacting plunger, molds disposed on said table, a moldingplunger, a coacting cylinder, means for returning said molding plungercomprising a plunger and cylinder, a control valve for said molding andreturn cylinders, a pressure actuated means for controlling said Valve,an ejecting means comprising a cylinder and a plunger adapted to engagethe inner mold members as they are successively brought to dischargingposition, and a fluid delivery and control members for the severalcylinders whereby the actuation of the parts is timed.

37. In a molding machine, the combination of a rotatable table, meansfor actuating said table with a step by step movement comprising acylinder and coacting plunger, molds disposed on said table whichconstitutes a bottom therefor, said molds comprising complementary moldmembers, the outer of which is pivotally mounted upon the table, theinner mold members being slidable upon the table, said mold membershaving abutting flanges at their meeting edges, a

molding plunger, a coacting cylinder, mold means comprising a cylinderand a plunger adapted to engage the inner mold members as they aresuccessively brought to discharging position, and fluid delivery andcontrol members for theseveral cylinders whereby the actuation of theparts is timed.

38. In a molding machine, the combination of a rotatable table, meansfor actuating said table with a step by step movement, comprising acylinder and coacting plunger, molds disposed on said table, 'a moldingplunger, a coacting cylinder, an ejecting means comprising a cylinderand a plunger adapted to engage the inner mold members as they aresuccessively brought to discharging position, and fluid delivery andcontrol members for the several cylinders whereby the actuation of theparts is timed.

39. In a molding machine, the combination of a rotatable table, meansfor actuating said table with a step by step movement, comprising acylinder and coacting plunger, molds disposed on said table whichconstitutes a bottom therefor, said molds comprising complementary moldmembers, the outer of which is pivotally mounted upon the table, theinner mold members being slidable upon the table, said mold membershaving abutting flanges at their meeting edges, a molding plunger, acoacting cylinder, means for returning said molding plunger comprising aplunger and cylinder, a control valve for said molding and returncylinders, a pressure actuated means for controlling said valve, moldlocking members coacting with said flanges, actuating means for saidmold locking members comprising cylinders and coacting plungers, meansfor clamping the mold to the table at molding position, and actuatingmeans for said clamping means comprising a cylinder and coactingplunger, and a fluid delivery and control members for the severalcylinders whereby the actuation of the parts is timed.

40. In a molding machine, the combination of a rotatable table, meansfor actuating said table with a step by step movement comprising acylinder and coacting plunger, molds disposed on said table whichconstitutes a bottom therefor, said molds comprising complementary moldmembers, the outer of which is pivotally mounted upon the table, theinner mold members being slidable upon the table, said mold membershaving abutting flanges at their meetmg edges, a

molding plunger, a coacting cylinder, mold locking members coacting withsaid flanges, actuating means for said mold locking members comprisingcylinders and coacting plungers, means for clamping the mold to thetable at molding position, actuating means for said clamping meanscomprising a cylinder and coacting cylinder, and a fluid delivery andcontrol members for the several cylinders whereby the actuation of theparts is timed.

' 41. The combination of a work cylinder and coacting plunger, a returncylinder and coacting plunger, an exhaust reservoir disposed above saidWork cylinder and connected thereto so that on the return stroke of thework plunger the actuating fluid is delivered to said exhaust reservoir,a valve controlling the connection for said work cylinder and exhaustreservoir, a control valve for said work and return cylinders, andoperating connections for said valves.

42. The combination of a work cylinder and coacting plunger, a returncylinder and coacting plunger, an exhaust reservoir connected to saidwork cylinder, a valve connection therefor to said work cylinder, and acontrol valve for said work cylinder operatively associated with saidexhaust reservoir whereby the fluid is permitted to flow from saidexhaust reservoir by gravity during the initial movement of the workplunger.

In witness whereof, I have hereunto set my hand and seal.

FRANK C. EMRICK. [L. s.]

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